Rotary steam-engine.



' ,0, E. BARTHEL.

ROTARY STEAM ENGINE.

APPLICATION FILED OCT. 19. 19!]. 1,294,691 Patented Feb. 18, 1919.

3 SHEETS-SHEEI l.

ATTORNEY 0. E. BARTHEL.

ROTARY STEAM ENGINE.

APPLICATION. FILED OCT. 19, 1917.

Patented Feb. 18, 1919.

3 SHEETS-SHEEI 2.

ATTOR N EY WITNESSES .0. E. BARTHEL.

ROTARY STEAM ENGINE.

g APPLICATION FILED 001'. 19. 1911. Patented F6 0. 18 1919.

3 SHEETS-SHET 3.

WITN EssEs ATTORNEY UNfTED TATE PATENT UFFlRE.

OSCAR E. BARTI-IEL, OF YORK, N. Y.

ROTARY STEAM-ENGINE.

To all whom it may concern: 7

Be it known that I, OSCAR E. Ban'rrrnma citizen of the United States, residing at New York, in the county of Kings andState of New York, have invented certain new and useful Improvements in Rotary Steam-Engines, of which the following is a specification.

This invention has relation to certain new and useful improvements in rotary steam engines and has for its primary object, the provision of an engine which will have increased speed and efliciency without a material increase in the cost of the construction and operation thereof.

Another object of the invention resides in the provision of a rotary steam engine of the above stated character which will be constructed in such manner that steam will be applied to operate the rotor during each complete revolution of the latter.

A further object of the invention resides in the provision of a rotary steam engine of the character stated which will include a pair of oppositely positioned rotor blades or pistons and means for supplying the motive fluid to each of the rotor blades orpistons during approximately a} of each revolution of the rotor.

A further object of the invention resides in the provision of a rotary steam engine which will be of such construction as to include movable means for directing the motive fluid to each blade or piston during a} of the revolution of the rotor and then moving out of the path of the blade or piston as the latter passes over the inlet opening of the cylinder opposite said blade or piston.

A still further object of the invention resides in the provision of a rotary steam engine of the above stated character which will be composed of the minimum number of parts of comparatively simple construction and operation and in which the movable fluid directing members for the opposite blades or pistons may be parted from the main shaft of the engine.

With the above and other objects in view, as will be apparent as the description proceeds, the invention consists in the novel combination and arrangement of cooperating elementsas hereinafter more specifically set forth, pointed out in the appended claims and shown in the accompanying drawings.

Specification of Letters Patent.

Application filed October 19, 1917. Serial No. 197,504.

engine;

Fig. 2 is a vertical transverse section on the plane of line 2-2 of Fig. 1, looking in the direction indicated by the arrows.

Fig. 3 is a detail sectional .view on the plane of line 3-3 of Fig. 2, looking in the direction indicated by the arrows.

Fig. f is a detail view of the rotor and main shaft, removed.

Fig. 5 is a detail transverse section on the plane of line 5-5 of Fig. 4.

Fig. 6 is a detail sectional view on the plane of line 6-6 of Fig. 2.

Fig. 7 is a detail view of one of the reciprocating inlet valves partly in section.

Fig. 8 is an end elevation of the valve, looking at the inner end thereof.

Fig. 9 is a detail transverse section on the plane of line 9-9 of Fig. 7 looking in the direction indicated by the arrows.

Fig. 10 is a detail elevation of the valve casing for the reciprocating inlet valve.

Fig. 11 is an end view of the casing, looking at the outer end thereof.

F g. 12 is a detail view showing the con nection between the main shaft and the cam shaft for operating the reciprocating inlet valves.

Fig. 13 is a detail view showing one of the cams and the connections between the same andpne of the reciprocating inlet valves.

Fig. 14 is a detail section on the plane of line 1414 of Fig. 13, looking in the direction indicated by the arrows.

Referring more particularly to the drawings, l designates the cylinder having removable heads 2. The main shaft 3 extends longitudinally through the cylinder 1 and through suitable central bearings 4 forming a part of the heads 2, the ends of the main shaft mounted in the bearings 4 being reduced in diameter. Suitable packing 5 is provided around the shaft 3, within the heads 2. Anti-friction collars 6 are also employed around the reduced portions of the shaft 3 and within the collars 7 formed on the inner faces of the heads 2. Anti-friction balls or hearing balls 8 are positioned between the collars 6. A washer 9 is also provided around the reduced portions of the shaft 3 and at the inner ends of the same. These washers 9 engage the opposite ends of the rotor 10 which is keyed to the main or central portion of the shaft 3, within the cylinder 1..

The rotor 1 has suitable packingrings 11 in its peripheral grooves 12, between the steam pockets 13 and also between said pockets 13 and ends of the rotor 10, as will be readily understood by referring to Fig. 3 of thedrawings. Each steam pocket 13 is extended around the rotor and has a portion closed by a radially extended rotor blade or piston 14, the opposite longitudinal edges of which engage in the grooves 15 in the opposite walls in the steam pocket 13. nlach steam pocket 13 has only one blade positioned therein and the blades of the two steam pockets 13 are positioned in diametrically opposite portions of the rotor 10, the purpose of which will presently appear.

The cylinder 1 is mounted on a suitable base 16 and is provided withan inlet port 17 and an exhaust port 18 for each steam pocket 13. The exhaust ports 18 are preferably positioned in the lower portion of the cylinder and have exhaust pipes 19 connected therewith while the inlet ports 17 are positioned in the lower portion of one side of the cylinder, a distance above the exhaust ports equal to about one eighth of the circumference of the cylinder. The purpose of this arrangement of the exhaust and inlet ports will also appear as the description proceeds.

The stationary valve casings 20 have flanged upper ends 21 which are secured by suitable securing 'members 22 around the inlet ports 17. The lower portions of the valve casings 20 are of increased diameter and provided with angular flanges 24.

The bearing collars 25 are positioned in the enlarged ends 23 of the valve casings 20 and secured in position by bolts 26 or other suitable securing members extended through the flanges 24 and through the flanges 27 of the collars 25. A packing material 28 is positioned in the ends 23 of the casings 20 at the inner ends of the bearing collars 25 and held in position by the latter to prevent leakage of the steam around the reciprocating valves 29 which operate in the bearing collars 25 and the main portions of the easings 20, as clearly shown in Fig. 2 of the drawings.

The upper and inner ends 30 ofthe valves 29 are tapered and adapted to enter the steam pockets 13, as shown in Fig. 2, when the valves are in their uppermost or innermost positions, thereby permitting the valves to direct the steam to the blades or pistons 14 and thereby drive the rotor 10. Each valve 29 has a longitudinal steam passage 31 which extends from a point a suitable distance from the lower or outer end thereof to the upper or inner tapered end 30, the passage 31 being turned at its upper end and opening upon one face of the beveled end 30, as shown at 32. The steam is sup plied to the passage 31 by a steam supply pipe 33 leading from a suitable source of supply of motive fluid, not shown, and havingone end secured in the outer portion 34 of the casing 20. An inlet port 35 is also provided in the side of the valve 29 and adapted to register with the supply pipe 33 when the valve 29 is in its uppermost or innermost position, as shownin Fig. 2 of the drawings.

A solid lower or outer end of each valve 29 is extended past the lower end of the easing 20. provided therefor and a pin 36 is extended transversely through the same to support the lower end of the operating arm 37 which is suitably mounted thereon as shown at 38. The opposite end of the arm 37 carries a pin 39 having a roller 40 mounted thereon and engaged in the cam groove 41 of the cam member 42. This cam member 42 is mounted concentrically upon the shaft 43 and adapted to rotate therewith. A sprocket wheel 44 is mounted upon the shaft 43 and driven by the chain 45 which also encircles the sprocket Wheel 46 mounted upon the main engine shaft 3, as shown in Fig. 1. While I have shown the preferred driving connections between the shafts 3 and 43, it will be understood that any suitable driving connections may he employed between these two shafts.

In order that the operating arms37 may straddle the shaft 43, I have shown the arms 37 as being provided with lwidened and longitudinally slotted portions 47." This will also serve to properly guide the arms 37 during operation of the engine; This may be readily understood by referring to Fig. 13 of the drawings.

The cam wheels 42 are positioned upon" the shaft 43 .and connected with the "valves 29 in such manner. that one 'valve will be i moved outwardly as the other valve moves inwardly and'movement' of-the parts is so timed that each valve 29 moves'inlwardly to the position shown in Fig.2 .of thedrawings.

just after the blade, 14 against which the steam from the valve is to be directed, passes over the valve. g

It will also be-noted by referring to Figs.

1 and 6, that the valve casings 20 are shown.

same before the sections are placed on the shaft 3. The central packing ring which extends over the two sections of the rotor may be placed upon one section after the same is secured in position and the other section may then be moved longitudinally upon the shaft 3 until it enters the central packing ring and engages the first section of the rotor, as shown in Fig. 3 of the drawings. It is believed that this will be readily understood by those familiar with this art [Without further explanation.

The form of connection between the main shaft 3 andthe shaft 43 as well as the connection between the shaft 43 and the reciprocating valve members 29 may be varied as desired.

It is believed that the complete invention may be readily understood from the foregoing description taken in connection with the accompanying drawings and further detailed description and the construction and operation of the parts of the engine will be unnecessary. It is to be understood, however, that I am not to be limited to the specific construction and arrangement of parts shown in the drawings, as minor changes may be made within the scope of the appended claims [without departing from the spirit of the invention.

I claim:

1. A rotary engine including a cylindrical asing having an exhaust opening, a cylindrical rotor mounted therein and havin a V- shaped groove intermediate its ends dc ning a relatively broad surface at each end of the rotor, a flange at each end of the rotor, bands of packing surrounding the rotor, a partition dividing the groove, an abutment movable radially in the groove, and means operable by the rotor for operating the abut ment.

2. In a rotary engine of the sliding abutment type, an abutment, a cam disk having a cam groove in its face which is concentric for the greater portion of its travel and diametrical for the remainder, a central stud projecting from the face of the disk, an operating rod having a longitudinal groove to receive the stud, a pin on one end of the rod to enter the groove, and a pivotal connection between the other end of the rod and the abutment.

In testimony whereof I afiix my signature in presence of two witnesses.

, OSCAR E. BARTHEL.

Witnesses:

J OHN E. BURCH, WILLIAM S. FOWLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

